Don't know that one, but the specs look good.
I'd try richening more to see what it does.
With the problem being on lower gears that sounds more like a fuel flow problem.
Is your gas tank vented properly?
(make sure some spider didn't make a nest in vent tube)
__________________
John Wallace - johnta1
Pontiac Power RULES !!!
www.wallaceracing.com
Winner of Top Class at Pontiac Nationals, 2004 Cordova
Winner of Quick 16 At Ames 2004 Pontiac Tripower Nats
KRE's MR-1 - 1st 5 second Pontiac block ever!
"Every man has a right to his own opinion, but no man has a right to be wrong in his facts."
"People demand freedom of speech to make up for the freedom of thought which they avoid." – Socrates